# OpenRadiation vs ToleranceLab

The clearest difference is price: OpenRadiation at Free against ToleranceLab's $2.99. OpenRadiation also leads on update cadence (every 3 months vs every 8 months) and device support (3 vs 1). ToleranceLab's advantage is rating (5.0 vs 2.0). On ratings volume, ads and in-app purchases there is nothing between them.

OpenRadiation is free to download; ToleranceLab costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ToleranceLab holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

OpenRadiation ships an update every 3 months, ToleranceLab every 8 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OpenRadiation | ToleranceLab |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/openradiation/id1246249831/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tolerancelab/id6757369411/reviews)** |
| Number of ratings | **4** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | **Free** | Paid |
| Size | 57 MB | 1 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ASNR](https://appshunter.io/developer/1861431469) | [Orlando Cossia Castiglioni](https://appshunter.io/developer/1866416694) |

## What reviewers say

### OpenRadiation

[App page](https://appshunter.io/ios/app/openradiation/id1246249831)

Measure ambient radioactivity levels and assess your exposure to ionizing radiation using a compatible sensor. Contribute to a citizen science project by sharing your measurements to build a collaborative database.

**Highlights:** Measure radioactivity levels, Assess radiation exposure, Contribute to citizen science, Collaborative data database, Share measurements, View data online

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ToleranceLab

[App page](https://appshunter.io/ios/app/tolerancelab/id6757369411)

This app assists engineers in selecting and understanding ISO 286 fits for mechanical designs. It calculates clearance or interference based on nominal size and basis classes, providing visual representations of resulting diameters. The tool also estimates contact pressure and stress for press fits and includes a reference guide for definitions and recommendations.

**Highlights:** ISO 286 fit selection, Hole/shaft basis class calculation, Clearance/interference visualization, Guided fit intent picker, Press fit stress estimation, Metric/imperial unit switching

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenRadiation free?

OpenRadiation is free to download, with no in-app purchases.

### Is ToleranceLab free?

ToleranceLab costs $2.99, with no in-app purchases.

### Which has better reviews, OpenRadiation or ToleranceLab?

ToleranceLab is rated higher. OpenRadiation averages 2.0 out of 5 from 4 ratings, while ToleranceLab averages 5.0 from 3 ratings.

### Do OpenRadiation or ToleranceLab have ads?

Neither OpenRadiation nor ToleranceLab shows ads.

### Which is updated more often, OpenRadiation or ToleranceLab?

OpenRadiation ships an update every 3 months, and ToleranceLab every 8 months. Most recently, OpenRadiation was updated on October 24, 2026 and ToleranceLab on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*